| /** |
| ****************************************************************************** |
| * @file stm32f2xx_hal_usart.c |
| * @author MCD Application Team |
| * @brief USART HAL module driver. |
| * This file provides firmware functions to manage the following |
| * functionalities of the Universal Synchronous/Asynchronous Receiver Transmitter |
| * Peripheral (USART). |
| * + Initialization and de-initialization functions |
| * + IO operation functions |
| * + Peripheral Control functions |
| * |
| ****************************************************************************** |
| * @attention |
| * |
| * Copyright (c) 2016 STMicroelectronics. |
| * All rights reserved. |
| * |
| * This software is licensed under terms that can be found in the LICENSE file |
| * in the root directory of this software component. |
| * If no LICENSE file comes with this software, it is provided AS-IS. |
| * |
| ****************************************************************************** |
| @verbatim |
| ============================================================================== |
| ##### How to use this driver ##### |
| ============================================================================== |
| [..] |
| The USART HAL driver can be used as follows: |
| |
| (#) Declare a USART_HandleTypeDef handle structure (eg. USART_HandleTypeDef husart). |
| (#) Initialize the USART low level resources by implementing the HAL_USART_MspInit() API: |
| (##) Enable the USARTx interface clock. |
| (##) USART pins configuration: |
| (+++) Enable the clock for the USART GPIOs. |
| (+++) Configure the USART pins as alternate function pull-up. |
| (##) NVIC configuration if you need to use interrupt process (HAL_USART_Transmit_IT(), |
| HAL_USART_Receive_IT() and HAL_USART_TransmitReceive_IT() APIs): |
| (+++) Configure the USARTx interrupt priority. |
| (+++) Enable the NVIC USART IRQ handle. |
| (##) DMA Configuration if you need to use DMA process (HAL_USART_Transmit_DMA() |
| HAL_USART_Receive_DMA() and HAL_USART_TransmitReceive_DMA() APIs): |
| (+++) Declare a DMA handle structure for the Tx/Rx stream. |
| (+++) Enable the DMAx interface clock. |
| (+++) Configure the declared DMA handle structure with the required Tx/Rx parameters. |
| (+++) Configure the DMA Tx/Rx stream. |
| (+++) Associate the initialized DMA handle to the USART DMA Tx/Rx handle. |
| (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx stream. |
| (+++) Configure the USARTx interrupt priority and enable the NVIC USART IRQ handle |
| (used for last byte sending completion detection in DMA non circular mode) |
| |
| (#) Program the Baud Rate, Word Length, Stop Bit, Parity, Hardware |
| flow control and Mode(Receiver/Transmitter) in the husart Init structure. |
| |
| (#) Initialize the USART registers by calling the HAL_USART_Init() API: |
| (++) These APIs configures also the low level Hardware GPIO, CLOCK, CORTEX...etc) |
| by calling the customized HAL_USART_MspInit(&husart) API. |
| |
| -@@- The specific USART interrupts (Transmission complete interrupt, |
| RXNE interrupt and Error Interrupts) will be managed using the macros |
| __HAL_USART_ENABLE_IT() and __HAL_USART_DISABLE_IT() inside the transmit and receive process. |
| |
| (#) Three operation modes are available within this driver : |
| |
| *** Polling mode IO operation *** |
| ================================= |
| [..] |
| (+) Send an amount of data in blocking mode using HAL_USART_Transmit() |
| (+) Receive an amount of data in blocking mode using HAL_USART_Receive() |
| |
| *** Interrupt mode IO operation *** |
| =================================== |
| [..] |
| (+) Send an amount of data in non blocking mode using HAL_USART_Transmit_IT() |
| (+) At transmission end of transfer HAL_USART_TxHalfCpltCallback is executed and user can |
| add his own code by customization of function pointer HAL_USART_TxCpltCallback |
| (+) Receive an amount of data in non blocking mode using HAL_USART_Receive_IT() |
| (+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can |
| add his own code by customization of function pointer HAL_USART_RxCpltCallback |
| (+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can |
| add his own code by customization of function pointer HAL_USART_ErrorCallback |
| |
| *** DMA mode IO operation *** |
| ============================== |
| [..] |
| (+) Send an amount of data in non blocking mode (DMA) using HAL_USART_Transmit_DMA() |
| (+) At transmission end of half transfer HAL_USART_TxHalfCpltCallback is executed and user can |
| add his own code by customization of function pointer HAL_USART_TxHalfCpltCallback |
| (+) At transmission end of transfer HAL_USART_TxCpltCallback is executed and user can |
| add his own code by customization of function pointer HAL_USART_TxCpltCallback |
| (+) Receive an amount of data in non blocking mode (DMA) using HAL_USART_Receive_DMA() |
| (+) At reception end of half transfer HAL_USART_RxHalfCpltCallback is executed and user can |
| add his own code by customization of function pointer HAL_USART_RxHalfCpltCallback |
| (+) At reception end of transfer HAL_USART_RxCpltCallback is executed and user can |
| add his own code by customization of function pointer HAL_USART_RxCpltCallback |
| (+) In case of transfer Error, HAL_USART_ErrorCallback() function is executed and user can |
| add his own code by customization of function pointer HAL_USART_ErrorCallback |
| (+) Pause the DMA Transfer using HAL_USART_DMAPause() |
| (+) Resume the DMA Transfer using HAL_USART_DMAResume() |
| (+) Stop the DMA Transfer using HAL_USART_DMAStop() |
| |
| *** USART HAL driver macros list *** |
| ============================================= |
| [..] |
| Below the list of most used macros in USART HAL driver. |
| |
| (+) __HAL_USART_ENABLE: Enable the USART peripheral |
| (+) __HAL_USART_DISABLE: Disable the USART peripheral |
| (+) __HAL_USART_GET_FLAG : Check whether the specified USART flag is set or not |
| (+) __HAL_USART_CLEAR_FLAG : Clear the specified USART pending flag |
| (+) __HAL_USART_ENABLE_IT: Enable the specified USART interrupt |
| (+) __HAL_USART_DISABLE_IT: Disable the specified USART interrupt |
| |
| [..] |
| (@) You can refer to the USART HAL driver header file for more useful macros |
| |
| ##### Callback registration ##### |
| ================================== |
| |
| [..] |
| The compilation define USE_HAL_USART_REGISTER_CALLBACKS when set to 1 |
| allows the user to configure dynamically the driver callbacks. |
| |
| [..] |
| Use Function @ref HAL_USART_RegisterCallback() to register a user callback. |
| Function @ref HAL_USART_RegisterCallback() allows to register following callbacks: |
| (+) TxHalfCpltCallback : Tx Half Complete Callback. |
| (+) TxCpltCallback : Tx Complete Callback. |
| (+) RxHalfCpltCallback : Rx Half Complete Callback. |
| (+) RxCpltCallback : Rx Complete Callback. |
| (+) TxRxCpltCallback : Tx Rx Complete Callback. |
| (+) ErrorCallback : Error Callback. |
| (+) AbortCpltCallback : Abort Complete Callback. |
| (+) MspInitCallback : USART MspInit. |
| (+) MspDeInitCallback : USART MspDeInit. |
| This function takes as parameters the HAL peripheral handle, the Callback ID |
| and a pointer to the user callback function. |
| |
| [..] |
| Use function @ref HAL_USART_UnRegisterCallback() to reset a callback to the default |
| weak (surcharged) function. |
| @ref HAL_USART_UnRegisterCallback() takes as parameters the HAL peripheral handle, |
| and the Callback ID. |
| This function allows to reset following callbacks: |
| (+) TxHalfCpltCallback : Tx Half Complete Callback. |
| (+) TxCpltCallback : Tx Complete Callback. |
| (+) RxHalfCpltCallback : Rx Half Complete Callback. |
| (+) RxCpltCallback : Rx Complete Callback. |
| (+) TxRxCpltCallback : Tx Rx Complete Callback. |
| (+) ErrorCallback : Error Callback. |
| (+) AbortCpltCallback : Abort Complete Callback. |
| (+) MspInitCallback : USART MspInit. |
| (+) MspDeInitCallback : USART MspDeInit. |
| |
| [..] |
| By default, after the @ref HAL_USART_Init() and when the state is HAL_USART_STATE_RESET |
| all callbacks are set to the corresponding weak (surcharged) functions: |
| examples @ref HAL_USART_TxCpltCallback(), @ref HAL_USART_RxHalfCpltCallback(). |
| Exception done for MspInit and MspDeInit functions that are respectively |
| reset to the legacy weak (surcharged) functions in the @ref HAL_USART_Init() |
| and @ref HAL_USART_DeInit() only when these callbacks are null (not registered beforehand). |
| If not, MspInit or MspDeInit are not null, the @ref HAL_USART_Init() and @ref HAL_USART_DeInit() |
| keep and use the user MspInit/MspDeInit callbacks (registered beforehand). |
| |
| [..] |
| Callbacks can be registered/unregistered in HAL_USART_STATE_READY state only. |
| Exception done MspInit/MspDeInit that can be registered/unregistered |
| in HAL_USART_STATE_READY or HAL_USART_STATE_RESET state, thus registered (user) |
| MspInit/DeInit callbacks can be used during the Init/DeInit. |
| In that case first register the MspInit/MspDeInit user callbacks |
| using @ref HAL_USART_RegisterCallback() before calling @ref HAL_USART_DeInit() |
| or @ref HAL_USART_Init() function. |
| |
| [..] |
| When The compilation define USE_HAL_USART_REGISTER_CALLBACKS is set to 0 or |
| not defined, the callback registration feature is not available |
| and weak (surcharged) callbacks are used. |
| |
| @endverbatim |
| [..] |
| (@) Additional remark: If the parity is enabled, then the MSB bit of the data written |
| in the data register is transmitted but is changed by the parity bit. |
| Depending on the frame length defined by the M bit (8-bits or 9-bits), |
| the possible USART frame formats are as listed in the following table: |
| +-------------------------------------------------------------+ |
| | M bit | PCE bit | USART frame | |
| |---------------------|---------------------------------------| |
| | 0 | 0 | | SB | 8 bit data | STB | | |
| |---------|-----------|---------------------------------------| |
| | 0 | 1 | | SB | 7 bit data | PB | STB | | |
| |---------|-----------|---------------------------------------| |
| | 1 | 0 | | SB | 9 bit data | STB | | |
| |---------|-----------|---------------------------------------| |
| | 1 | 1 | | SB | 8 bit data | PB | STB | | |
| +-------------------------------------------------------------+ |
| |
| ****************************************************************************** |
| */ |
| |
| /* Includes ------------------------------------------------------------------*/ |
| #include "stm32f2xx_hal.h" |
| |
| /** @addtogroup STM32F2xx_HAL_Driver |
| * @{ |
| */ |
| |
| /** @defgroup USART USART |
| * @brief HAL USART Synchronous module driver |
| * @{ |
| */ |
| #ifdef HAL_USART_MODULE_ENABLED |
| /* Private typedef -----------------------------------------------------------*/ |
| /* Private define ------------------------------------------------------------*/ |
| /** @addtogroup USART_Private_Constants |
| * @{ |
| */ |
| #define DUMMY_DATA 0xFFFFU |
| #define USART_TIMEOUT_VALUE 22000U |
| /** |
| * @} |
| */ |
| /* Private macro -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private function prototypes -----------------------------------------------*/ |
| /* Private functions ---------------------------------------------------------*/ |
| /** @addtogroup USART_Private_Functions |
| * @{ |
| */ |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| void USART_InitCallbacksToDefault(USART_HandleTypeDef *husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| static void USART_EndTxTransfer(USART_HandleTypeDef *husart); |
| static void USART_EndRxTransfer(USART_HandleTypeDef *husart); |
| static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart); |
| static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart); |
| static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart); |
| static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart); |
| static void USART_SetConfig(USART_HandleTypeDef *husart); |
| static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma); |
| static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma); |
| static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma); |
| static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma); |
| static void USART_DMAError(DMA_HandleTypeDef *hdma); |
| static void USART_DMAAbortOnError(DMA_HandleTypeDef *hdma); |
| static void USART_DMATxAbortCallback(DMA_HandleTypeDef *hdma); |
| static void USART_DMARxAbortCallback(DMA_HandleTypeDef *hdma); |
| |
| static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, |
| uint32_t Tickstart, uint32_t Timeout); |
| /** |
| * @} |
| */ |
| |
| /* Exported functions --------------------------------------------------------*/ |
| /** @defgroup USART_Exported_Functions USART Exported Functions |
| * @{ |
| */ |
| |
| /** @defgroup USART_Exported_Functions_Group1 USART Initialization and de-initialization functions |
| * @brief Initialization and Configuration functions |
| * |
| @verbatim |
| ============================================================================== |
| ##### Initialization and Configuration functions ##### |
| ============================================================================== |
| [..] |
| This subsection provides a set of functions allowing to initialize the USART |
| in asynchronous and in synchronous modes. |
| (+) For the asynchronous mode only these parameters can be configured: |
| (++) Baud Rate |
| (++) Word Length |
| (++) Stop Bit |
| (++) Parity: If the parity is enabled, then the MSB bit of the data written |
| in the data register is transmitted but is changed by the parity bit. |
| Depending on the frame length defined by the M bit (8-bits or 9-bits), |
| please refer to Reference manual for possible USART frame formats. |
| (++) USART polarity |
| (++) USART phase |
| (++) USART LastBit |
| (++) Receiver/transmitter modes |
| |
| [..] |
| The HAL_USART_Init() function follows the USART synchronous configuration |
| procedures (details for the procedures are available in reference manual (RM0033)). |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Initialize the USART mode according to the specified |
| * parameters in the USART_InitTypeDef and initialize the associated handle. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_Init(USART_HandleTypeDef *husart) |
| { |
| /* Check the USART handle allocation */ |
| if (husart == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Check the parameters */ |
| assert_param(IS_USART_INSTANCE(husart->Instance)); |
| |
| if (husart->State == HAL_USART_STATE_RESET) |
| { |
| /* Allocate lock resource and initialize it */ |
| husart->Lock = HAL_UNLOCKED; |
| |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| USART_InitCallbacksToDefault(husart); |
| |
| if (husart->MspInitCallback == NULL) |
| { |
| husart->MspInitCallback = HAL_USART_MspInit; |
| } |
| |
| /* Init the low level hardware */ |
| husart->MspInitCallback(husart); |
| #else |
| /* Init the low level hardware : GPIO, CLOCK */ |
| HAL_USART_MspInit(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| |
| husart->State = HAL_USART_STATE_BUSY; |
| |
| /* Set the USART Communication parameters */ |
| USART_SetConfig(husart); |
| |
| /* In USART mode, the following bits must be kept cleared: |
| - LINEN bit in the USART_CR2 register |
| - HDSEL, SCEN and IREN bits in the USART_CR3 register */ |
| CLEAR_BIT(husart->Instance->CR2, USART_CR2_LINEN); |
| CLEAR_BIT(husart->Instance->CR3, (USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN)); |
| |
| /* Enable the Peripheral */ |
| __HAL_USART_ENABLE(husart); |
| |
| /* Initialize the USART state */ |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| husart->State = HAL_USART_STATE_READY; |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief DeInitializes the USART peripheral. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_DeInit(USART_HandleTypeDef *husart) |
| { |
| /* Check the USART handle allocation */ |
| if (husart == NULL) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Check the parameters */ |
| assert_param(IS_USART_INSTANCE(husart->Instance)); |
| |
| husart->State = HAL_USART_STATE_BUSY; |
| |
| /* Disable the Peripheral */ |
| __HAL_USART_DISABLE(husart); |
| |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| if (husart->MspDeInitCallback == NULL) |
| { |
| husart->MspDeInitCallback = HAL_USART_MspDeInit; |
| } |
| /* DeInit the low level hardware */ |
| husart->MspDeInitCallback(husart); |
| #else |
| /* DeInit the low level hardware */ |
| HAL_USART_MspDeInit(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| husart->State = HAL_USART_STATE_RESET; |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(husart); |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief USART MSP Init. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval None |
| */ |
| __weak void HAL_USART_MspInit(USART_HandleTypeDef *husart) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(husart); |
| /* NOTE: This function should not be modified, when the callback is needed, |
| the HAL_USART_MspInit could be implemented in the user file |
| */ |
| } |
| |
| /** |
| * @brief USART MSP DeInit. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval None |
| */ |
| __weak void HAL_USART_MspDeInit(USART_HandleTypeDef *husart) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(husart); |
| /* NOTE: This function should not be modified, when the callback is needed, |
| the HAL_USART_MspDeInit could be implemented in the user file |
| */ |
| } |
| |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /** |
| * @brief Register a User USART Callback |
| * To be used instead of the weak predefined callback |
| * @param husart usart handle |
| * @param CallbackID ID of the callback to be registered |
| * This parameter can be one of the following values: |
| * @arg @ref HAL_USART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID |
| * @arg @ref HAL_USART_TX_COMPLETE_CB_ID Tx Complete Callback ID |
| * @arg @ref HAL_USART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID |
| * @arg @ref HAL_USART_RX_COMPLETE_CB_ID Rx Complete Callback ID |
| * @arg @ref HAL_USART_TX_RX_COMPLETE_CB_ID Rx Complete Callback ID |
| * @arg @ref HAL_USART_ERROR_CB_ID Error Callback ID |
| * @arg @ref HAL_USART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID |
| * @arg @ref HAL_USART_MSPINIT_CB_ID MspInit Callback ID |
| * @arg @ref HAL_USART_MSPDEINIT_CB_ID MspDeInit Callback ID |
| * @param pCallback pointer to the Callback function |
| * @retval HAL status |
| + */ |
| HAL_StatusTypeDef HAL_USART_RegisterCallback(USART_HandleTypeDef *husart, HAL_USART_CallbackIDTypeDef CallbackID, |
| pUSART_CallbackTypeDef pCallback) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| if (pCallback == NULL) |
| { |
| /* Update the error code */ |
| husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; |
| |
| return HAL_ERROR; |
| } |
| /* Process locked */ |
| __HAL_LOCK(husart); |
| |
| if (husart->State == HAL_USART_STATE_READY) |
| { |
| switch (CallbackID) |
| { |
| case HAL_USART_TX_HALFCOMPLETE_CB_ID : |
| husart->TxHalfCpltCallback = pCallback; |
| break; |
| |
| case HAL_USART_TX_COMPLETE_CB_ID : |
| husart->TxCpltCallback = pCallback; |
| break; |
| |
| case HAL_USART_RX_HALFCOMPLETE_CB_ID : |
| husart->RxHalfCpltCallback = pCallback; |
| break; |
| |
| case HAL_USART_RX_COMPLETE_CB_ID : |
| husart->RxCpltCallback = pCallback; |
| break; |
| |
| case HAL_USART_TX_RX_COMPLETE_CB_ID : |
| husart->TxRxCpltCallback = pCallback; |
| break; |
| |
| case HAL_USART_ERROR_CB_ID : |
| husart->ErrorCallback = pCallback; |
| break; |
| |
| case HAL_USART_ABORT_COMPLETE_CB_ID : |
| husart->AbortCpltCallback = pCallback; |
| break; |
| |
| case HAL_USART_MSPINIT_CB_ID : |
| husart->MspInitCallback = pCallback; |
| break; |
| |
| case HAL_USART_MSPDEINIT_CB_ID : |
| husart->MspDeInitCallback = pCallback; |
| break; |
| |
| default : |
| /* Update the error code */ |
| husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else if (husart->State == HAL_USART_STATE_RESET) |
| { |
| switch (CallbackID) |
| { |
| case HAL_USART_MSPINIT_CB_ID : |
| husart->MspInitCallback = pCallback; |
| break; |
| |
| case HAL_USART_MSPDEINIT_CB_ID : |
| husart->MspDeInitCallback = pCallback; |
| break; |
| |
| default : |
| /* Update the error code */ |
| husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else |
| { |
| /* Update the error code */ |
| husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| } |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(husart); |
| |
| return status; |
| } |
| |
| /** |
| * @brief Unregister an USART Callback |
| * USART callaback is redirected to the weak predefined callback |
| * @param husart usart handle |
| * @param CallbackID ID of the callback to be unregistered |
| * This parameter can be one of the following values: |
| * @arg @ref HAL_USART_TX_HALFCOMPLETE_CB_ID Tx Half Complete Callback ID |
| * @arg @ref HAL_USART_TX_COMPLETE_CB_ID Tx Complete Callback ID |
| * @arg @ref HAL_USART_RX_HALFCOMPLETE_CB_ID Rx Half Complete Callback ID |
| * @arg @ref HAL_USART_RX_COMPLETE_CB_ID Rx Complete Callback ID |
| * @arg @ref HAL_USART_TX_RX_COMPLETE_CB_ID Rx Complete Callback ID |
| * @arg @ref HAL_USART_ERROR_CB_ID Error Callback ID |
| * @arg @ref HAL_USART_ABORT_COMPLETE_CB_ID Abort Complete Callback ID |
| * @arg @ref HAL_USART_MSPINIT_CB_ID MspInit Callback ID |
| * @arg @ref HAL_USART_MSPDEINIT_CB_ID MspDeInit Callback ID |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_UnRegisterCallback(USART_HandleTypeDef *husart, HAL_USART_CallbackIDTypeDef CallbackID) |
| { |
| HAL_StatusTypeDef status = HAL_OK; |
| |
| /* Process locked */ |
| __HAL_LOCK(husart); |
| |
| if (husart->State == HAL_USART_STATE_READY) |
| { |
| switch (CallbackID) |
| { |
| case HAL_USART_TX_HALFCOMPLETE_CB_ID : |
| husart->TxHalfCpltCallback = HAL_USART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */ |
| break; |
| |
| case HAL_USART_TX_COMPLETE_CB_ID : |
| husart->TxCpltCallback = HAL_USART_TxCpltCallback; /* Legacy weak TxCpltCallback */ |
| break; |
| |
| case HAL_USART_RX_HALFCOMPLETE_CB_ID : |
| husart->RxHalfCpltCallback = HAL_USART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */ |
| break; |
| |
| case HAL_USART_RX_COMPLETE_CB_ID : |
| husart->RxCpltCallback = HAL_USART_RxCpltCallback; /* Legacy weak RxCpltCallback */ |
| break; |
| |
| case HAL_USART_TX_RX_COMPLETE_CB_ID : |
| husart->TxRxCpltCallback = HAL_USART_TxRxCpltCallback; /* Legacy weak TxRxCpltCallback */ |
| break; |
| |
| case HAL_USART_ERROR_CB_ID : |
| husart->ErrorCallback = HAL_USART_ErrorCallback; /* Legacy weak ErrorCallback */ |
| break; |
| |
| case HAL_USART_ABORT_COMPLETE_CB_ID : |
| husart->AbortCpltCallback = HAL_USART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */ |
| break; |
| |
| case HAL_USART_MSPINIT_CB_ID : |
| husart->MspInitCallback = HAL_USART_MspInit; /* Legacy weak MspInitCallback */ |
| break; |
| |
| case HAL_USART_MSPDEINIT_CB_ID : |
| husart->MspDeInitCallback = HAL_USART_MspDeInit; /* Legacy weak MspDeInitCallback */ |
| break; |
| |
| default : |
| /* Update the error code */ |
| husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else if (husart->State == HAL_USART_STATE_RESET) |
| { |
| switch (CallbackID) |
| { |
| case HAL_USART_MSPINIT_CB_ID : |
| husart->MspInitCallback = HAL_USART_MspInit; |
| break; |
| |
| case HAL_USART_MSPDEINIT_CB_ID : |
| husart->MspDeInitCallback = HAL_USART_MspDeInit; |
| break; |
| |
| default : |
| /* Update the error code */ |
| husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| break; |
| } |
| } |
| else |
| { |
| /* Update the error code */ |
| husart->ErrorCode |= HAL_USART_ERROR_INVALID_CALLBACK; |
| |
| /* Return error status */ |
| status = HAL_ERROR; |
| } |
| |
| /* Release Lock */ |
| __HAL_UNLOCK(husart); |
| |
| return status; |
| } |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| |
| /** |
| * @} |
| */ |
| |
| /** @defgroup USART_Exported_Functions_Group2 IO operation functions |
| * @brief USART Transmit and Receive functions |
| * |
| @verbatim |
| ============================================================================== |
| ##### IO operation functions ##### |
| ============================================================================== |
| [..] |
| This subsection provides a set of functions allowing to manage the USART synchronous |
| data transfers. |
| |
| [..] |
| The USART supports master mode only: it cannot receive or send data related to an input |
| clock (SCLK is always an output). |
| |
| (#) There are two modes of transfer: |
| (++) Blocking mode: The communication is performed in polling mode. |
| The HAL status of all data processing is returned by the same function |
| after finishing transfer. |
| (++) No-Blocking mode: The communication is performed using Interrupts |
| or DMA, These API's return the HAL status. |
| The end of the data processing will be indicated through the |
| dedicated USART IRQ when using Interrupt mode or the DMA IRQ when |
| using DMA mode. |
| The HAL_USART_TxCpltCallback(), HAL_USART_RxCpltCallback() and HAL_USART_TxRxCpltCallback() |
| user callbacks |
| will be executed respectively at the end of the transmit or Receive process |
| The HAL_USART_ErrorCallback() user callback will be executed when a communication |
| error is detected |
| |
| (#) Blocking mode APIs are : |
| (++) HAL_USART_Transmit() in simplex mode |
| (++) HAL_USART_Receive() in full duplex receive only |
| (++) HAL_USART_TransmitReceive() in full duplex mode |
| |
| (#) Non Blocking mode APIs with Interrupt are : |
| (++) HAL_USART_Transmit_IT()in simplex mode |
| (++) HAL_USART_Receive_IT() in full duplex receive only |
| (++) HAL_USART_TransmitReceive_IT() in full duplex mode |
| (++) HAL_USART_IRQHandler() |
| |
| (#) Non Blocking mode functions with DMA are : |
| (++) HAL_USART_Transmit_DMA()in simplex mode |
| (++) HAL_USART_Receive_DMA() in full duplex receive only |
| (++) HAL_USART_TransmitReceive_DMA() in full duplex mode |
| (++) HAL_USART_DMAPause() |
| (++) HAL_USART_DMAResume() |
| (++) HAL_USART_DMAStop() |
| |
| (#) A set of Transfer Complete Callbacks are provided in non Blocking mode: |
| (++) HAL_USART_TxHalfCpltCallback() |
| (++) HAL_USART_TxCpltCallback() |
| (++) HAL_USART_RxHalfCpltCallback() |
| (++) HAL_USART_RxCpltCallback() |
| (++) HAL_USART_ErrorCallback() |
| (++) HAL_USART_TxRxCpltCallback() |
| |
| (#) Non-Blocking mode transfers could be aborted using Abort API's : |
| (++) HAL_USART_Abort() |
| (++) HAL_USART_Abort_IT() |
| |
| (#) For Abort services based on interrupts (HAL_USART_Abort_IT), a Abort Complete Callbacks is provided: |
| (++) HAL_USART_AbortCpltCallback() |
| |
| (#) In Non-Blocking mode transfers, possible errors are split into 2 categories. |
| Errors are handled as follows : |
| (++) Error is considered as Recoverable and non blocking : Transfer could go till end, but error severity is |
| to be evaluated by user : this concerns Frame Error, Parity Error or Noise Error in Interrupt mode reception . |
| Received character is then retrieved and stored in Rx buffer, Error code is set to allow user to identify error type, |
| and HAL_USART_ErrorCallback() user callback is executed. Transfer is kept ongoing on USART side. |
| If user wants to abort it, Abort services should be called by user. |
| (++) Error is considered as Blocking : Transfer could not be completed properly and is aborted. |
| This concerns Overrun Error In Interrupt mode reception and all errors in DMA mode. |
| Error code is set to allow user to identify error type, and HAL_USART_ErrorCallback() user callback is executed. |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Simplex Send an amount of data in blocking mode. |
| * @note When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the sent data is handled as a set of u16. In this case, Size must indicate the number |
| * of u16 provided through pTxData. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @param pTxData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be sent. |
| * @param Timeout Timeout duration. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_Transmit(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size, uint32_t Timeout) |
| { |
| uint8_t *ptxdata8bits; |
| uint16_t *ptxdata16bits; |
| uint32_t tickstart; |
| |
| if (husart->State == HAL_USART_STATE_READY) |
| { |
| if ((pTxData == NULL) || (Size == 0)) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(husart); |
| |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| husart->State = HAL_USART_STATE_BUSY_TX; |
| |
| /* Init tickstart for timeout management */ |
| tickstart = HAL_GetTick(); |
| |
| husart->TxXferSize = Size; |
| husart->TxXferCount = Size; |
| |
| /* In case of 9bits/No Parity transfer, pTxData needs to be handled as a uint16_t pointer */ |
| if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) |
| { |
| ptxdata8bits = NULL; |
| ptxdata16bits = (uint16_t *) pTxData; |
| } |
| else |
| { |
| ptxdata8bits = pTxData; |
| ptxdata16bits = NULL; |
| } |
| |
| while (husart->TxXferCount > 0U) |
| { |
| /* Wait for TXE flag in order to write data in DR */ |
| if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK) |
| { |
| return HAL_TIMEOUT; |
| } |
| if (ptxdata8bits == NULL) |
| { |
| husart->Instance->DR = (uint16_t)(*ptxdata16bits & (uint16_t)0x01FF); |
| ptxdata16bits++; |
| } |
| else |
| { |
| husart->Instance->DR = (uint8_t)(*ptxdata8bits & (uint8_t)0xFF); |
| ptxdata8bits++; |
| } |
| |
| husart->TxXferCount--; |
| } |
| |
| if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TC, RESET, tickstart, Timeout) != HAL_OK) |
| { |
| return HAL_TIMEOUT; |
| } |
| |
| husart->State = HAL_USART_STATE_READY; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(husart); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Full-Duplex Receive an amount of data in blocking mode. |
| * @note To receive synchronous data, dummy data are simultaneously transmitted. |
| * @note When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the received data is handled as a set of u16. In this case, Size must indicate the number |
| * of u16 available through pRxData. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @param pRxData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be received. |
| * @param Timeout Timeout duration. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_Receive(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size, uint32_t Timeout) |
| { |
| uint8_t *prxdata8bits; |
| uint16_t *prxdata16bits; |
| uint32_t tickstart; |
| |
| if (husart->State == HAL_USART_STATE_READY) |
| { |
| if ((pRxData == NULL) || (Size == 0)) |
| { |
| return HAL_ERROR; |
| } |
| /* Process Locked */ |
| __HAL_LOCK(husart); |
| |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| husart->State = HAL_USART_STATE_BUSY_RX; |
| |
| /* Init tickstart for timeout management */ |
| tickstart = HAL_GetTick(); |
| |
| husart->RxXferSize = Size; |
| husart->RxXferCount = Size; |
| |
| /* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */ |
| if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) |
| { |
| prxdata8bits = NULL; |
| prxdata16bits = (uint16_t *) pRxData; |
| } |
| else |
| { |
| prxdata8bits = pRxData; |
| prxdata16bits = NULL; |
| } |
| |
| /* Check the remain data to be received */ |
| while (husart->RxXferCount > 0U) |
| { |
| /* Wait until TXE flag is set to send dummy byte in order to generate the |
| * clock for the slave to send data. |
| * Whatever the frame length (7, 8 or 9-bit long), the same dummy value |
| * can be written for all the cases. */ |
| if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK) |
| { |
| return HAL_TIMEOUT; |
| } |
| husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x0FF); |
| |
| /* Wait until RXNE flag is set to receive the byte */ |
| if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK) |
| { |
| return HAL_TIMEOUT; |
| } |
| |
| if (prxdata8bits == NULL) |
| { |
| *prxdata16bits = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF); |
| prxdata16bits++; |
| } |
| else |
| { |
| if ((husart->Init.WordLength == USART_WORDLENGTH_9B) || ((husart->Init.WordLength == USART_WORDLENGTH_8B) && (husart->Init.Parity == USART_PARITY_NONE))) |
| { |
| *prxdata8bits = (uint8_t)(husart->Instance->DR & (uint8_t)0x0FF); |
| } |
| else |
| { |
| *prxdata8bits = (uint8_t)(husart->Instance->DR & (uint8_t)0x07F); |
| } |
| prxdata8bits++; |
| } |
| husart->RxXferCount--; |
| } |
| |
| husart->State = HAL_USART_STATE_READY; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(husart); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Full-Duplex Send and Receive an amount of data in full-duplex mode (blocking mode). |
| * @note When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the sent data and the received data are handled as sets of u16. In this case, Size must indicate the number |
| * of u16 available through pTxData and through pRxData. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @param pTxData Pointer to TX data buffer (u8 or u16 data elements). |
| * @param pRxData Pointer to RX data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be sent (same amount to be received). |
| * @param Timeout Timeout duration |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_TransmitReceive(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, |
| uint16_t Size, uint32_t Timeout) |
| { |
| uint8_t *prxdata8bits; |
| uint16_t *prxdata16bits; |
| uint8_t *ptxdata8bits; |
| uint16_t *ptxdata16bits; |
| uint16_t rxdatacount; |
| uint32_t tickstart; |
| |
| if (husart->State == HAL_USART_STATE_READY) |
| { |
| if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0)) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* In case of 9bits/No Parity transfer, pTxData and pRxData buffers provided as input parameter |
| should be aligned on a u16 frontier, as data to be filled into TDR/retrieved from RDR will be |
| handled through a u16 cast. */ |
| if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) |
| { |
| if (((((uint32_t)pTxData) & 1U) != 0U) || ((((uint32_t)pRxData) & 1U) != 0U)) |
| { |
| return HAL_ERROR; |
| } |
| } |
| /* Process Locked */ |
| __HAL_LOCK(husart); |
| |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| husart->State = HAL_USART_STATE_BUSY_RX; |
| |
| /* Init tickstart for timeout management */ |
| tickstart = HAL_GetTick(); |
| |
| husart->RxXferSize = Size; |
| husart->TxXferSize = Size; |
| husart->TxXferCount = Size; |
| husart->RxXferCount = Size; |
| |
| /* In case of 9bits/No Parity transfer, pRxData needs to be handled as a uint16_t pointer */ |
| if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) |
| { |
| prxdata8bits = NULL; |
| ptxdata8bits = NULL; |
| ptxdata16bits = (uint16_t *) pTxData; |
| prxdata16bits = (uint16_t *) pRxData; |
| } |
| else |
| { |
| prxdata8bits = pRxData; |
| ptxdata8bits = pTxData; |
| ptxdata16bits = NULL; |
| prxdata16bits = NULL; |
| } |
| |
| /* Check the remain data to be received */ |
| /* rxdatacount is a temporary variable for MISRAC2012-Rule-13.5 */ |
| rxdatacount = husart->RxXferCount; |
| while ((husart->TxXferCount > 0U) || (rxdatacount > 0U)) |
| { |
| if (husart->TxXferCount > 0U) |
| { |
| /* Wait for TXE flag in order to write data in DR */ |
| if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_TXE, RESET, tickstart, Timeout) != HAL_OK) |
| { |
| return HAL_TIMEOUT; |
| } |
| |
| if (ptxdata8bits == NULL) |
| { |
| husart->Instance->DR = (uint16_t)(*ptxdata16bits & (uint16_t)0x01FF); |
| ptxdata16bits++; |
| } |
| else |
| { |
| husart->Instance->DR = (uint8_t)(*ptxdata8bits & (uint8_t)0xFF); |
| ptxdata8bits++; |
| } |
| |
| husart->TxXferCount--; |
| } |
| |
| if (husart->RxXferCount > 0U) |
| { |
| /* Wait for RXNE Flag */ |
| if (USART_WaitOnFlagUntilTimeout(husart, USART_FLAG_RXNE, RESET, tickstart, Timeout) != HAL_OK) |
| { |
| return HAL_TIMEOUT; |
| } |
| if (prxdata8bits == NULL) |
| { |
| *prxdata16bits = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF); |
| prxdata16bits++; |
| } |
| else |
| { |
| if ((husart->Init.WordLength == USART_WORDLENGTH_9B) || ((husart->Init.WordLength == USART_WORDLENGTH_8B) && (husart->Init.Parity == USART_PARITY_NONE))) |
| { |
| *prxdata8bits = (uint8_t)(husart->Instance->DR & (uint8_t)0x0FF); |
| } |
| else |
| { |
| *prxdata8bits = (uint8_t)(husart->Instance->DR & (uint8_t)0x07F); |
| } |
| |
| prxdata8bits++; |
| } |
| |
| husart->RxXferCount--; |
| } |
| rxdatacount = husart->RxXferCount; |
| } |
| |
| husart->State = HAL_USART_STATE_READY; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(husart); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Simplex Send an amount of data in non-blocking mode. |
| * @note When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the sent data is handled as a set of u16. In this case, Size must indicate the number |
| * of u16 provided through pTxData. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @param pTxData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be sent. |
| * @retval HAL status |
| * @note The USART errors are not managed to avoid the overrun error. |
| */ |
| HAL_StatusTypeDef HAL_USART_Transmit_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size) |
| { |
| if (husart->State == HAL_USART_STATE_READY) |
| { |
| if ((pTxData == NULL) || (Size == 0)) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(husart); |
| |
| husart->pTxBuffPtr = pTxData; |
| husart->TxXferSize = Size; |
| husart->TxXferCount = Size; |
| |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| husart->State = HAL_USART_STATE_BUSY_TX; |
| |
| /* The USART Error Interrupts: (Frame error, Noise error, Overrun error) |
| are not managed by the USART transmit process to avoid the overrun interrupt |
| when the USART mode is configured for transmit and receive "USART_MODE_TX_RX" |
| to benefit for the frame error and noise interrupts the USART mode should be |
| configured only for transmit "USART_MODE_TX" |
| The __HAL_USART_ENABLE_IT(husart, USART_IT_ERR) can be used to enable the Frame error, |
| Noise error interrupt */ |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(husart); |
| |
| /* Enable the USART Transmit Data Register Empty Interrupt */ |
| SET_BIT(husart->Instance->CR1, USART_CR1_TXEIE); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Simplex Receive an amount of data in non-blocking mode. |
| * @note To receive synchronous data, dummy data are simultaneously transmitted. |
| * @note When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the received data is handled as a set of u16. In this case, Size must indicate the number |
| * of u16 available through pRxData. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @param pRxData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be received. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_Receive_IT(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size) |
| { |
| if (husart->State == HAL_USART_STATE_READY) |
| { |
| if ((pRxData == NULL) || (Size == 0)) |
| { |
| return HAL_ERROR; |
| } |
| /* Process Locked */ |
| __HAL_LOCK(husart); |
| |
| husart->pRxBuffPtr = pRxData; |
| husart->RxXferSize = Size; |
| husart->RxXferCount = Size; |
| |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| husart->State = HAL_USART_STATE_BUSY_RX; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(husart); |
| |
| if (husart->Init.Parity != USART_PARITY_NONE) |
| { |
| /* Enable the USART Parity Error and Data Register not empty Interrupts */ |
| SET_BIT(husart->Instance->CR1, USART_CR1_PEIE | USART_CR1_RXNEIE); |
| } |
| else |
| { |
| /* Enable the USART Data Register not empty Interrupts */ |
| SET_BIT(husart->Instance->CR1, USART_CR1_RXNEIE); |
| } |
| |
| /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */ |
| SET_BIT(husart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Send dummy byte in order to generate the clock for the slave to send data */ |
| husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x01FF); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Full-Duplex Send and Receive an amount of data in full-duplex mode (non-blocking). |
| * @note When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the sent data and the received data are handled as sets of u16. In this case, Size must indicate the number |
| * of u16 available through pTxData and through pRxData. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @param pTxData Pointer to TX data buffer (u8 or u16 data elements). |
| * @param pRxData Pointer to RX data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be sent (same amount to be received). |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_TransmitReceive_IT(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, |
| uint16_t Size) |
| { |
| if (husart->State == HAL_USART_STATE_READY) |
| { |
| if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0)) |
| { |
| return HAL_ERROR; |
| } |
| /* Process Locked */ |
| __HAL_LOCK(husart); |
| |
| husart->pRxBuffPtr = pRxData; |
| husart->RxXferSize = Size; |
| husart->RxXferCount = Size; |
| husart->pTxBuffPtr = pTxData; |
| husart->TxXferSize = Size; |
| husart->TxXferCount = Size; |
| |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| husart->State = HAL_USART_STATE_BUSY_TX_RX; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(husart); |
| |
| /* Enable the USART Data Register not empty Interrupt */ |
| SET_BIT(husart->Instance->CR1, USART_CR1_RXNEIE); |
| |
| if (husart->Init.Parity != USART_PARITY_NONE) |
| { |
| /* Enable the USART Parity Error Interrupt */ |
| SET_BIT(husart->Instance->CR1, USART_CR1_PEIE); |
| } |
| |
| /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */ |
| SET_BIT(husart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Enable the USART Transmit Data Register Empty Interrupt */ |
| SET_BIT(husart->Instance->CR1, USART_CR1_TXEIE); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Simplex Send an amount of data in DMA mode. |
| * @note When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the sent data is handled as a set of u16. In this case, Size must indicate the number |
| * of u16 provided through pTxData. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @param pTxData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be sent. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_Transmit_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint16_t Size) |
| { |
| uint32_t *tmp; |
| |
| if (husart->State == HAL_USART_STATE_READY) |
| { |
| if ((pTxData == NULL) || (Size == 0)) |
| { |
| return HAL_ERROR; |
| } |
| /* Process Locked */ |
| __HAL_LOCK(husart); |
| |
| husart->pTxBuffPtr = pTxData; |
| husart->TxXferSize = Size; |
| husart->TxXferCount = Size; |
| |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| husart->State = HAL_USART_STATE_BUSY_TX; |
| |
| /* Set the USART DMA transfer complete callback */ |
| husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt; |
| |
| /* Set the USART DMA Half transfer complete callback */ |
| husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt; |
| |
| /* Set the DMA error callback */ |
| husart->hdmatx->XferErrorCallback = USART_DMAError; |
| |
| /* Set the DMA abort callback */ |
| husart->hdmatx->XferAbortCallback = NULL; |
| |
| /* Enable the USART transmit DMA stream */ |
| tmp = (uint32_t *)&pTxData; |
| HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t *)tmp, (uint32_t)&husart->Instance->DR, Size); |
| |
| /* Clear the TC flag in the SR register by writing 0 to it */ |
| __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(husart); |
| |
| /* Enable the DMA transfer for transmit request by setting the DMAT bit |
| in the USART CR3 register */ |
| SET_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Full-Duplex Receive an amount of data in DMA mode. |
| * @note When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the received data is handled as a set of u16. In this case, Size must indicate the number |
| * of u16 available through pRxData. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @param pRxData Pointer to data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be received. |
| * @retval HAL status |
| * @note The USART DMA transmit stream must be configured in order to generate the clock for the slave. |
| * @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit. |
| */ |
| HAL_StatusTypeDef HAL_USART_Receive_DMA(USART_HandleTypeDef *husart, uint8_t *pRxData, uint16_t Size) |
| { |
| uint32_t *tmp; |
| |
| if (husart->State == HAL_USART_STATE_READY) |
| { |
| if ((pRxData == NULL) || (Size == 0)) |
| { |
| return HAL_ERROR; |
| } |
| |
| /* Process Locked */ |
| __HAL_LOCK(husart); |
| |
| husart->pRxBuffPtr = pRxData; |
| husart->RxXferSize = Size; |
| husart->pTxBuffPtr = pRxData; |
| husart->TxXferSize = Size; |
| |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| husart->State = HAL_USART_STATE_BUSY_RX; |
| |
| /* Set the USART DMA Rx transfer complete callback */ |
| husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt; |
| |
| /* Set the USART DMA Half transfer complete callback */ |
| husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt; |
| |
| /* Set the USART DMA Rx transfer error callback */ |
| husart->hdmarx->XferErrorCallback = USART_DMAError; |
| |
| /* Set the DMA abort callback */ |
| husart->hdmarx->XferAbortCallback = NULL; |
| |
| /* Set the USART Tx DMA transfer complete callback as NULL because the communication closing |
| is performed in DMA reception complete callback */ |
| husart->hdmatx->XferHalfCpltCallback = NULL; |
| husart->hdmatx->XferCpltCallback = NULL; |
| |
| /* Set the DMA error callback */ |
| husart->hdmatx->XferErrorCallback = USART_DMAError; |
| |
| /* Set the DMA AbortCpltCallback */ |
| husart->hdmatx->XferAbortCallback = NULL; |
| |
| /* Enable the USART receive DMA stream */ |
| tmp = (uint32_t *)&pRxData; |
| HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t *)tmp, Size); |
| |
| /* Enable the USART transmit DMA stream: the transmit stream is used in order |
| to generate in the non-blocking mode the clock to the slave device, |
| this mode isn't a simplex receive mode but a full-duplex receive one */ |
| HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t *)tmp, (uint32_t)&husart->Instance->DR, Size); |
| |
| /* Clear the Overrun flag just before enabling the DMA Rx request: mandatory for the second transfer */ |
| __HAL_USART_CLEAR_OREFLAG(husart); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(husart); |
| |
| if (husart->Init.Parity != USART_PARITY_NONE) |
| { |
| /* Enable the USART Parity Error Interrupt */ |
| SET_BIT(husart->Instance->CR1, USART_CR1_PEIE); |
| } |
| |
| /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */ |
| SET_BIT(husart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Enable the DMA transfer for the receiver request by setting the DMAR bit |
| in the USART CR3 register */ |
| SET_BIT(husart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Enable the DMA transfer for transmit request by setting the DMAT bit |
| in the USART CR3 register */ |
| SET_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Full-Duplex Transmit Receive an amount of data in DMA mode. |
| * @note When USART parity is not enabled (PCE = 0), and Word Length is configured to 9 bits (M1-M0 = 01), |
| * the sent data and the received data are handled as sets of u16. In this case, Size must indicate the number |
| * of u16 available through pTxData and through pRxData. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @param pTxData Pointer to TX data buffer (u8 or u16 data elements). |
| * @param pRxData Pointer to RX data buffer (u8 or u16 data elements). |
| * @param Size Amount of data elements (u8 or u16) to be received/sent. |
| * @note When the USART parity is enabled (PCE = 1) the data received contain the parity bit. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_TransmitReceive_DMA(USART_HandleTypeDef *husart, uint8_t *pTxData, uint8_t *pRxData, |
| uint16_t Size) |
| { |
| uint32_t *tmp; |
| |
| if (husart->State == HAL_USART_STATE_READY) |
| { |
| if ((pTxData == NULL) || (pRxData == NULL) || (Size == 0)) |
| { |
| return HAL_ERROR; |
| } |
| /* Process Locked */ |
| __HAL_LOCK(husart); |
| |
| husart->pRxBuffPtr = pRxData; |
| husart->RxXferSize = Size; |
| husart->pTxBuffPtr = pTxData; |
| husart->TxXferSize = Size; |
| |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| husart->State = HAL_USART_STATE_BUSY_TX_RX; |
| |
| /* Set the USART DMA Rx transfer complete callback */ |
| husart->hdmarx->XferCpltCallback = USART_DMAReceiveCplt; |
| |
| /* Set the USART DMA Half transfer complete callback */ |
| husart->hdmarx->XferHalfCpltCallback = USART_DMARxHalfCplt; |
| |
| /* Set the USART DMA Tx transfer complete callback */ |
| husart->hdmatx->XferCpltCallback = USART_DMATransmitCplt; |
| |
| /* Set the USART DMA Half transfer complete callback */ |
| husart->hdmatx->XferHalfCpltCallback = USART_DMATxHalfCplt; |
| |
| /* Set the USART DMA Tx transfer error callback */ |
| husart->hdmatx->XferErrorCallback = USART_DMAError; |
| |
| /* Set the USART DMA Rx transfer error callback */ |
| husart->hdmarx->XferErrorCallback = USART_DMAError; |
| |
| /* Set the DMA abort callback */ |
| husart->hdmarx->XferAbortCallback = NULL; |
| |
| /* Enable the USART receive DMA stream */ |
| tmp = (uint32_t *)&pRxData; |
| HAL_DMA_Start_IT(husart->hdmarx, (uint32_t)&husart->Instance->DR, *(uint32_t *)tmp, Size); |
| |
| /* Enable the USART transmit DMA stream */ |
| tmp = (uint32_t *)&pTxData; |
| HAL_DMA_Start_IT(husart->hdmatx, *(uint32_t *)tmp, (uint32_t)&husart->Instance->DR, Size); |
| |
| /* Clear the TC flag in the SR register by writing 0 to it */ |
| __HAL_USART_CLEAR_FLAG(husart, USART_FLAG_TC); |
| |
| /* Clear the Overrun flag: mandatory for the second transfer in circular mode */ |
| __HAL_USART_CLEAR_OREFLAG(husart); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(husart); |
| |
| if (husart->Init.Parity != USART_PARITY_NONE) |
| { |
| /* Enable the USART Parity Error Interrupt */ |
| SET_BIT(husart->Instance->CR1, USART_CR1_PEIE); |
| } |
| |
| /* Enable the USART Error Interrupt: (Frame error, noise error, overrun error) */ |
| SET_BIT(husart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Enable the DMA transfer for the receiver request by setting the DMAR bit |
| in the USART CR3 register */ |
| SET_BIT(husart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Enable the DMA transfer for transmit request by setting the DMAT bit |
| in the USART CR3 register */ |
| SET_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Pauses the DMA Transfer. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_DMAPause(USART_HandleTypeDef *husart) |
| { |
| /* Process Locked */ |
| __HAL_LOCK(husart); |
| |
| /* Disable the USART DMA Tx request */ |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(husart); |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Resumes the DMA Transfer. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_DMAResume(USART_HandleTypeDef *husart) |
| { |
| /* Process Locked */ |
| __HAL_LOCK(husart); |
| |
| /* Enable the USART DMA Tx request */ |
| SET_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(husart); |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Stops the DMA Transfer. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_DMAStop(USART_HandleTypeDef *husart) |
| { |
| uint32_t dmarequest = 0x00U; |
| /* The Lock is not implemented on this API to allow the user application |
| to call the HAL USART API under callbacks HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback(): |
| when calling HAL_DMA_Abort() API the DMA TX/RX Transfer complete interrupt is generated |
| and the correspond call back is executed HAL_USART_TxCpltCallback() / HAL_USART_RxCpltCallback() |
| */ |
| |
| /* Stop USART DMA Tx request if ongoing */ |
| dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT); |
| if ((husart->State == HAL_USART_STATE_BUSY_TX) && dmarequest) |
| { |
| USART_EndTxTransfer(husart); |
| |
| /* Abort the USART DMA Tx channel */ |
| if (husart->hdmatx != NULL) |
| { |
| HAL_DMA_Abort(husart->hdmatx); |
| } |
| |
| /* Disable the USART Tx DMA request */ |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
| } |
| |
| /* Stop USART DMA Rx request if ongoing */ |
| dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR); |
| if ((husart->State == HAL_USART_STATE_BUSY_RX) && dmarequest) |
| { |
| USART_EndRxTransfer(husart); |
| |
| /* Abort the USART DMA Rx channel */ |
| if (husart->hdmarx != NULL) |
| { |
| HAL_DMA_Abort(husart->hdmarx); |
| } |
| |
| /* Disable the USART Rx DMA request */ |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR); |
| } |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Abort ongoing transfer (blocking mode). |
| * @param husart USART handle. |
| * @note This procedure could be used for aborting any ongoing transfer (either Tx or Rx, |
| * as described by TransferType parameter) started in Interrupt or DMA mode. |
| * This procedure performs following operations : |
| * - Disable PPP Interrupts (depending of transfer direction) |
| * - Disable the DMA transfer in the peripheral register (if enabled) |
| * - Abort DMA transfer by calling HAL_DMA_Abort (in case of transfer in DMA mode) |
| * - Set handle State to READY |
| * @note This procedure is executed in blocking mode : when exiting function, Abort is considered as completed. |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_Abort(USART_HandleTypeDef *husart) |
| { |
| /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE)); |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Disable the USART DMA Tx request if enabled */ |
| if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT)) |
| { |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Abort the USART DMA Tx channel : use blocking DMA Abort API (no callback) */ |
| if (husart->hdmatx != NULL) |
| { |
| /* Set the USART DMA Abort callback to Null. |
| No call back execution at end of DMA abort procedure */ |
| husart->hdmatx->XferAbortCallback = NULL; |
| |
| HAL_DMA_Abort(husart->hdmatx); |
| } |
| } |
| |
| /* Disable the USART DMA Rx request if enabled */ |
| if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the USART DMA Rx channel : use blocking DMA Abort API (no callback) */ |
| if (husart->hdmarx != NULL) |
| { |
| /* Set the USART DMA Abort callback to Null. |
| No call back execution at end of DMA abort procedure */ |
| husart->hdmarx->XferAbortCallback = NULL; |
| |
| HAL_DMA_Abort(husart->hdmarx); |
| } |
| } |
| |
| /* Reset Tx and Rx transfer counters */ |
| husart->TxXferCount = 0x00U; |
| husart->RxXferCount = 0x00U; |
| |
| /* Restore husart->State to Ready */ |
| husart->State = HAL_USART_STATE_READY; |
| |
| /* Reset Handle ErrorCode to No Error */ |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Abort ongoing transfer (Interrupt mode). |
| * @param husart USART handle. |
| * @note This procedure could be used for aborting any ongoing transfer (either Tx or Rx, |
| * as described by TransferType parameter) started in Interrupt or DMA mode. |
| * This procedure performs following operations : |
| * - Disable PPP Interrupts (depending of transfer direction) |
| * - Disable the DMA transfer in the peripheral register (if enabled) |
| * - Abort DMA transfer by calling HAL_DMA_Abort_IT (in case of transfer in DMA mode) |
| * - Set handle State to READY |
| * - At abort completion, call user abort complete callback |
| * @note This procedure is executed in Interrupt mode, meaning that abort procedure could be |
| * considered as completed only when user abort complete callback is executed (not when exiting function). |
| * @retval HAL status |
| */ |
| HAL_StatusTypeDef HAL_USART_Abort_IT(USART_HandleTypeDef *husart) |
| { |
| uint32_t AbortCplt = 0x01U; |
| |
| /* Disable TXEIE, TCIE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE | USART_CR1_TXEIE | USART_CR1_TCIE)); |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE); |
| |
| /* If DMA Tx and/or DMA Rx Handles are associated to USART Handle, DMA Abort complete callbacks should be initialised |
| before any call to DMA Abort functions */ |
| /* DMA Tx Handle is valid */ |
| if (husart->hdmatx != NULL) |
| { |
| /* Set DMA Abort Complete callback if USART DMA Tx request if enabled. |
| Otherwise, set it to NULL */ |
| if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT)) |
| { |
| husart->hdmatx->XferAbortCallback = USART_DMATxAbortCallback; |
| } |
| else |
| { |
| husart->hdmatx->XferAbortCallback = NULL; |
| } |
| } |
| /* DMA Rx Handle is valid */ |
| if (husart->hdmarx != NULL) |
| { |
| /* Set DMA Abort Complete callback if USART DMA Rx request if enabled. |
| Otherwise, set it to NULL */ |
| if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| husart->hdmarx->XferAbortCallback = USART_DMARxAbortCallback; |
| } |
| else |
| { |
| husart->hdmarx->XferAbortCallback = NULL; |
| } |
| } |
| |
| /* Disable the USART DMA Tx request if enabled */ |
| if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT)) |
| { |
| /* Disable DMA Tx at USART level */ |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Abort the USART DMA Tx channel : use non blocking DMA Abort API (callback) */ |
| if (husart->hdmatx != NULL) |
| { |
| /* USART Tx DMA Abort callback has already been initialised : |
| will lead to call HAL_USART_AbortCpltCallback() at end of DMA abort procedure */ |
| |
| /* Abort DMA TX */ |
| if (HAL_DMA_Abort_IT(husart->hdmatx) != HAL_OK) |
| { |
| husart->hdmatx->XferAbortCallback = NULL; |
| } |
| else |
| { |
| AbortCplt = 0x00U; |
| } |
| } |
| } |
| |
| /* Disable the USART DMA Rx request if enabled */ |
| if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the USART DMA Rx channel : use non blocking DMA Abort API (callback) */ |
| if (husart->hdmarx != NULL) |
| { |
| /* USART Rx DMA Abort callback has already been initialised : |
| will lead to call HAL_USART_AbortCpltCallback() at end of DMA abort procedure */ |
| |
| /* Abort DMA RX */ |
| if (HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK) |
| { |
| husart->hdmarx->XferAbortCallback = NULL; |
| AbortCplt = 0x01U; |
| } |
| else |
| { |
| AbortCplt = 0x00U; |
| } |
| } |
| } |
| |
| /* if no DMA abort complete callback execution is required => call user Abort Complete callback */ |
| if (AbortCplt == 0x01U) |
| { |
| /* Reset Tx and Rx transfer counters */ |
| husart->TxXferCount = 0x00U; |
| husart->RxXferCount = 0x00U; |
| |
| /* Reset errorCode */ |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| |
| /* Restore husart->State to Ready */ |
| husart->State = HAL_USART_STATE_READY; |
| |
| /* As no DMA to be aborted, call directly user Abort complete callback */ |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Abort Complete Callback */ |
| husart->AbortCpltCallback(husart); |
| #else |
| /* Call legacy weak Abort Complete Callback */ |
| HAL_USART_AbortCpltCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief This function handles USART interrupt request. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval None |
| */ |
| void HAL_USART_IRQHandler(USART_HandleTypeDef *husart) |
| { |
| uint32_t isrflags = READ_REG(husart->Instance->SR); |
| uint32_t cr1its = READ_REG(husart->Instance->CR1); |
| uint32_t cr3its = READ_REG(husart->Instance->CR3); |
| uint32_t errorflags = 0x00U; |
| uint32_t dmarequest = 0x00U; |
| |
| /* If no error occurs */ |
| errorflags = (isrflags & (uint32_t)(USART_SR_PE | USART_SR_FE | USART_SR_ORE | USART_SR_NE)); |
| if (errorflags == RESET) |
| { |
| /* USART in mode Receiver -------------------------------------------------*/ |
| if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET)) |
| { |
| if (husart->State == HAL_USART_STATE_BUSY_RX) |
| { |
| USART_Receive_IT(husart); |
| } |
| else |
| { |
| USART_TransmitReceive_IT(husart); |
| } |
| return; |
| } |
| } |
| /* If some errors occur */ |
| if ((errorflags != RESET) && (((cr3its & USART_CR3_EIE) != RESET) || ((cr1its & (USART_CR1_RXNEIE | USART_CR1_PEIE)) != RESET))) |
| { |
| /* USART parity error interrupt occurred ----------------------------------*/ |
| if (((isrflags & USART_SR_PE) != RESET) && ((cr1its & USART_CR1_PEIE) != RESET)) |
| { |
| husart->ErrorCode |= HAL_USART_ERROR_PE; |
| } |
| |
| /* USART noise error interrupt occurred --------------------------------*/ |
| if (((isrflags & USART_SR_NE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET)) |
| { |
| husart->ErrorCode |= HAL_USART_ERROR_NE; |
| } |
| |
| /* USART frame error interrupt occurred --------------------------------*/ |
| if (((isrflags & USART_SR_FE) != RESET) && ((cr3its & USART_CR3_EIE) != RESET)) |
| { |
| husart->ErrorCode |= HAL_USART_ERROR_FE; |
| } |
| |
| /* USART Over-Run interrupt occurred -----------------------------------*/ |
| if (((isrflags & USART_SR_ORE) != RESET) && (((cr1its & USART_CR1_RXNEIE) != RESET) || ((cr3its & USART_CR3_EIE) != RESET))) |
| { |
| husart->ErrorCode |= HAL_USART_ERROR_ORE; |
| } |
| |
| if (husart->ErrorCode != HAL_USART_ERROR_NONE) |
| { |
| /* USART in mode Receiver -----------------------------------------------*/ |
| if (((isrflags & USART_SR_RXNE) != RESET) && ((cr1its & USART_CR1_RXNEIE) != RESET)) |
| { |
| if (husart->State == HAL_USART_STATE_BUSY_RX) |
| { |
| USART_Receive_IT(husart); |
| } |
| else |
| { |
| USART_TransmitReceive_IT(husart); |
| } |
| } |
| /* If Overrun error occurs, or if any error occurs in DMA mode reception, |
| consider error as blocking */ |
| dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR); |
| if (((husart->ErrorCode & HAL_USART_ERROR_ORE) != RESET) || dmarequest) |
| { |
| /* Set the USART state ready to be able to start again the process, |
| Disable Rx Interrupts, and disable Rx DMA request, if ongoing */ |
| USART_EndRxTransfer(husart); |
| |
| /* Disable the USART DMA Rx request if enabled */ |
| if (HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR)) |
| { |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR); |
| |
| /* Abort the USART DMA Rx channel */ |
| if (husart->hdmarx != NULL) |
| { |
| /* Set the USART DMA Abort callback : |
| will lead to call HAL_USART_ErrorCallback() at end of DMA abort procedure */ |
| husart->hdmarx->XferAbortCallback = USART_DMAAbortOnError; |
| |
| if (HAL_DMA_Abort_IT(husart->hdmarx) != HAL_OK) |
| { |
| /* Call Directly XferAbortCallback function in case of error */ |
| husart->hdmarx->XferAbortCallback(husart->hdmarx); |
| } |
| } |
| else |
| { |
| /* Call user error callback */ |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Error Callback */ |
| husart->ErrorCallback(husart); |
| #else |
| /* Call legacy weak Error Callback */ |
| HAL_USART_ErrorCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| } |
| else |
| { |
| /* Call user error callback */ |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Error Callback */ |
| husart->ErrorCallback(husart); |
| #else |
| /* Call legacy weak Error Callback */ |
| HAL_USART_ErrorCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| } |
| else |
| { |
| /* Call user error callback */ |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Error Callback */ |
| husart->ErrorCallback(husart); |
| #else |
| /* Call legacy weak Error Callback */ |
| HAL_USART_ErrorCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| } |
| } |
| return; |
| } |
| |
| /* USART in mode Transmitter -----------------------------------------------*/ |
| if (((isrflags & USART_SR_TXE) != RESET) && ((cr1its & USART_CR1_TXEIE) != RESET)) |
| { |
| if (husart->State == HAL_USART_STATE_BUSY_TX) |
| { |
| USART_Transmit_IT(husart); |
| } |
| else |
| { |
| USART_TransmitReceive_IT(husart); |
| } |
| return; |
| } |
| |
| /* USART in mode Transmitter (transmission end) ----------------------------*/ |
| if (((isrflags & USART_SR_TC) != RESET) && ((cr1its & USART_CR1_TCIE) != RESET)) |
| { |
| USART_EndTransmit_IT(husart); |
| return; |
| } |
| } |
| |
| /** |
| * @brief Tx Transfer completed callbacks. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval None |
| */ |
| __weak void HAL_USART_TxCpltCallback(USART_HandleTypeDef *husart) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(husart); |
| /* NOTE: This function should not be modified, when the callback is needed, |
| the HAL_USART_TxCpltCallback could be implemented in the user file |
| */ |
| } |
| |
| /** |
| * @brief Tx Half Transfer completed callbacks. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval None |
| */ |
| __weak void HAL_USART_TxHalfCpltCallback(USART_HandleTypeDef *husart) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(husart); |
| /* NOTE: This function should not be modified, when the callback is needed, |
| the HAL_USART_TxHalfCpltCallback could be implemented in the user file |
| */ |
| } |
| |
| /** |
| * @brief Rx Transfer completed callbacks. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval None |
| */ |
| __weak void HAL_USART_RxCpltCallback(USART_HandleTypeDef *husart) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(husart); |
| /* NOTE: This function should not be modified, when the callback is needed, |
| the HAL_USART_RxCpltCallback could be implemented in the user file |
| */ |
| } |
| |
| /** |
| * @brief Rx Half Transfer completed callbacks. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval None |
| */ |
| __weak void HAL_USART_RxHalfCpltCallback(USART_HandleTypeDef *husart) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(husart); |
| /* NOTE: This function should not be modified, when the callback is needed, |
| the HAL_USART_RxHalfCpltCallback could be implemented in the user file |
| */ |
| } |
| |
| /** |
| * @brief Tx/Rx Transfers completed callback for the non-blocking process. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval None |
| */ |
| __weak void HAL_USART_TxRxCpltCallback(USART_HandleTypeDef *husart) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(husart); |
| /* NOTE: This function should not be modified, when the callback is needed, |
| the HAL_USART_TxRxCpltCallback could be implemented in the user file |
| */ |
| } |
| |
| /** |
| * @brief USART error callbacks. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval None |
| */ |
| __weak void HAL_USART_ErrorCallback(USART_HandleTypeDef *husart) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(husart); |
| /* NOTE: This function should not be modified, when the callback is needed, |
| the HAL_USART_ErrorCallback could be implemented in the user file |
| */ |
| } |
| |
| /** |
| * @brief USART Abort Complete callback. |
| * @param husart USART handle. |
| * @retval None |
| */ |
| __weak void HAL_USART_AbortCpltCallback(USART_HandleTypeDef *husart) |
| { |
| /* Prevent unused argument(s) compilation warning */ |
| UNUSED(husart); |
| |
| /* NOTE : This function should not be modified, when the callback is needed, |
| the HAL_USART_AbortCpltCallback can be implemented in the user file. |
| */ |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** @defgroup USART_Exported_Functions_Group3 Peripheral State and Errors functions |
| * @brief USART State and Errors functions |
| * |
| @verbatim |
| ============================================================================== |
| ##### Peripheral State and Errors functions ##### |
| ============================================================================== |
| [..] |
| This subsection provides a set of functions allowing to return the State of |
| USART communication |
| process, return Peripheral Errors occurred during communication process |
| (+) HAL_USART_GetState() API can be helpful to check in run-time the state |
| of the USART peripheral. |
| (+) HAL_USART_GetError() check in run-time errors that could be occurred during |
| communication. |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Returns the USART state. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval HAL state |
| */ |
| HAL_USART_StateTypeDef HAL_USART_GetState(USART_HandleTypeDef *husart) |
| { |
| return husart->State; |
| } |
| |
| /** |
| * @brief Return the USART error code |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART. |
| * @retval USART Error Code |
| */ |
| uint32_t HAL_USART_GetError(USART_HandleTypeDef *husart) |
| { |
| return husart->ErrorCode; |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** @defgroup USART_Private_Functions USART Private Functions |
| * @{ |
| */ |
| |
| /** |
| * @brief Initialize the callbacks to their default values. |
| * @param husart USART handle. |
| * @retval none |
| */ |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| void USART_InitCallbacksToDefault(USART_HandleTypeDef *husart) |
| { |
| /* Init the USART Callback settings */ |
| husart->TxHalfCpltCallback = HAL_USART_TxHalfCpltCallback; /* Legacy weak TxHalfCpltCallback */ |
| husart->TxCpltCallback = HAL_USART_TxCpltCallback; /* Legacy weak TxCpltCallback */ |
| husart->RxHalfCpltCallback = HAL_USART_RxHalfCpltCallback; /* Legacy weak RxHalfCpltCallback */ |
| husart->RxCpltCallback = HAL_USART_RxCpltCallback; /* Legacy weak RxCpltCallback */ |
| husart->TxRxCpltCallback = HAL_USART_TxRxCpltCallback; /* Legacy weak TxRxCpltCallback */ |
| husart->ErrorCallback = HAL_USART_ErrorCallback; /* Legacy weak ErrorCallback */ |
| husart->AbortCpltCallback = HAL_USART_AbortCpltCallback; /* Legacy weak AbortCpltCallback */ |
| } |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| |
| /** |
| * @brief DMA USART transmit process complete callback. |
| * @param hdma Pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA module. |
| * @retval None |
| */ |
| static void USART_DMATransmitCplt(DMA_HandleTypeDef *hdma) |
| { |
| USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; |
| /* DMA Normal mode */ |
| if ((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U) |
| { |
| husart->TxXferCount = 0U; |
| if (husart->State == HAL_USART_STATE_BUSY_TX) |
| { |
| /* Disable the DMA transfer for transmit request by resetting the DMAT bit |
| in the USART CR3 register */ |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* Enable the USART Transmit Complete Interrupt */ |
| SET_BIT(husart->Instance->CR1, USART_CR1_TCIE); |
| } |
| } |
| /* DMA Circular mode */ |
| else |
| { |
| if (husart->State == HAL_USART_STATE_BUSY_TX) |
| { |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Tx Complete Callback */ |
| husart->TxCpltCallback(husart); |
| #else |
| /* Call legacy weak Tx Complete Callback */ |
| HAL_USART_TxCpltCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| } |
| } |
| |
| /** |
| * @brief DMA USART transmit process half complete callback |
| * @param hdma Pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA module. |
| * @retval None |
| */ |
| static void USART_DMATxHalfCplt(DMA_HandleTypeDef *hdma) |
| { |
| USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; |
| |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Tx Half Complete Callback */ |
| husart->TxHalfCpltCallback(husart); |
| #else |
| /* Call legacy weak Tx Half Complete Callback */ |
| HAL_USART_TxHalfCpltCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| |
| /** |
| * @brief DMA USART receive process complete callback. |
| * @param hdma Pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA module. |
| * @retval None |
| */ |
| static void USART_DMAReceiveCplt(DMA_HandleTypeDef *hdma) |
| { |
| USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; |
| /* DMA Normal mode */ |
| if ((hdma->Instance->CR & DMA_SxCR_CIRC) == 0U) |
| { |
| husart->RxXferCount = 0x00U; |
| |
| /* Disable RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts */ |
| CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE); |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE); |
| |
| /* Disable the DMA transfer for the Transmit/receiver request by clearing the DMAT/DMAR bit |
| in the USART CR3 register */ |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAR); |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_DMAT); |
| |
| /* The USART state is HAL_USART_STATE_BUSY_RX */ |
| if (husart->State == HAL_USART_STATE_BUSY_RX) |
| { |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Rx Complete Callback */ |
| husart->RxCpltCallback(husart); |
| #else |
| /* Call legacy weak Rx Complete Callback */ |
| HAL_USART_RxCpltCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| /* The USART state is HAL_USART_STATE_BUSY_TX_RX */ |
| else |
| { |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Tx Rx Complete Callback */ |
| husart->TxRxCpltCallback(husart); |
| #else |
| /* Call legacy weak Tx Rx Complete Callback */ |
| HAL_USART_TxRxCpltCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| husart->State = HAL_USART_STATE_READY; |
| } |
| /* DMA circular mode */ |
| else |
| { |
| if (husart->State == HAL_USART_STATE_BUSY_RX) |
| { |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Rx Complete Callback */ |
| husart->RxCpltCallback(husart); |
| #else |
| /* Call legacy weak Rx Complete Callback */ |
| HAL_USART_RxCpltCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| /* The USART state is HAL_USART_STATE_BUSY_TX_RX */ |
| else |
| { |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Tx Rx Complete Callback */ |
| husart->TxRxCpltCallback(husart); |
| #else |
| /* Call legacy weak Tx Rx Complete Callback */ |
| HAL_USART_TxRxCpltCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| } |
| } |
| |
| /** |
| * @brief DMA USART receive process half complete callback |
| * @param hdma Pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA module. |
| * @retval None |
| */ |
| static void USART_DMARxHalfCplt(DMA_HandleTypeDef *hdma) |
| { |
| USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; |
| |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Rx Half Complete Callback */ |
| husart->RxHalfCpltCallback(husart); |
| #else |
| /* Call legacy weak Rx Half Complete Callback */ |
| HAL_USART_RxHalfCpltCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| |
| /** |
| * @brief DMA USART communication error callback. |
| * @param hdma Pointer to a DMA_HandleTypeDef structure that contains |
| * the configuration information for the specified DMA module. |
| * @retval None |
| */ |
| static void USART_DMAError(DMA_HandleTypeDef *hdma) |
| { |
| uint32_t dmarequest = 0x00U; |
| USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; |
| husart->RxXferCount = 0x00U; |
| husart->TxXferCount = 0x00U; |
| |
| /* Stop USART DMA Tx request if ongoing */ |
| dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAT); |
| if ((husart->State == HAL_USART_STATE_BUSY_TX) && dmarequest) |
| { |
| USART_EndTxTransfer(husart); |
| } |
| |
| /* Stop USART DMA Rx request if ongoing */ |
| dmarequest = HAL_IS_BIT_SET(husart->Instance->CR3, USART_CR3_DMAR); |
| if ((husart->State == HAL_USART_STATE_BUSY_RX) && dmarequest) |
| { |
| USART_EndRxTransfer(husart); |
| } |
| |
| husart->ErrorCode |= HAL_USART_ERROR_DMA; |
| husart->State = HAL_USART_STATE_READY; |
| |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Error Callback */ |
| husart->ErrorCallback(husart); |
| #else |
| /* Call legacy weak Error Callback */ |
| HAL_USART_ErrorCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| |
| /** |
| * @brief This function handles USART Communication Timeout. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @param Flag specifies the USART flag to check. |
| * @param Status The new Flag status (SET or RESET). |
| * @param Tickstart Tick start value. |
| * @param Timeout Timeout duration. |
| * @retval HAL status |
| */ |
| static HAL_StatusTypeDef USART_WaitOnFlagUntilTimeout(USART_HandleTypeDef *husart, uint32_t Flag, FlagStatus Status, |
| uint32_t Tickstart, uint32_t Timeout) |
| { |
| /* Wait until flag is set */ |
| while ((__HAL_USART_GET_FLAG(husart, Flag) ? SET : RESET) == Status) |
| { |
| /* Check for the Timeout */ |
| if (Timeout != HAL_MAX_DELAY) |
| { |
| if ((Timeout == 0U) || ((HAL_GetTick() - Tickstart) > Timeout)) |
| { |
| /* Disable the USART Transmit Complete Interrupt */ |
| CLEAR_BIT(husart->Instance->CR1, USART_CR1_TXEIE); |
| |
| /* Disable the USART RXNE Interrupt */ |
| CLEAR_BIT(husart->Instance->CR1, USART_CR1_RXNEIE); |
| |
| /* Disable the USART Parity Error Interrupt */ |
| CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE); |
| |
| /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */ |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE); |
| |
| husart->State = HAL_USART_STATE_READY; |
| |
| /* Process Unlocked */ |
| __HAL_UNLOCK(husart); |
| |
| return HAL_TIMEOUT; |
| } |
| } |
| } |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief End ongoing Tx transfer on USART peripheral (following error detection or Transmit completion). |
| * @param husart USART handle. |
| * @retval None |
| */ |
| static void USART_EndTxTransfer(USART_HandleTypeDef *husart) |
| { |
| /* Disable TXEIE and TCIE interrupts */ |
| CLEAR_BIT(husart->Instance->CR1, (USART_CR1_TXEIE | USART_CR1_TCIE)); |
| |
| /* At end of Tx process, restore husart->State to Ready */ |
| husart->State = HAL_USART_STATE_READY; |
| } |
| |
| /** |
| * @brief End ongoing Rx transfer on USART peripheral (following error detection or Reception completion). |
| * @param husart USART handle. |
| * @retval None |
| */ |
| static void USART_EndRxTransfer(USART_HandleTypeDef *husart) |
| { |
| /* Disable RXNE, PE and ERR interrupts */ |
| CLEAR_BIT(husart->Instance->CR1, (USART_CR1_RXNEIE | USART_CR1_PEIE)); |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE); |
| |
| /* At end of Rx process, restore husart->State to Ready */ |
| husart->State = HAL_USART_STATE_READY; |
| } |
| |
| /** |
| * @brief DMA USART communication abort callback, when initiated by HAL services on Error |
| * (To be called at end of DMA Abort procedure following error occurrence). |
| * @param hdma DMA handle. |
| * @retval None |
| */ |
| static void USART_DMAAbortOnError(DMA_HandleTypeDef *hdma) |
| { |
| USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; |
| husart->RxXferCount = 0x00U; |
| husart->TxXferCount = 0x00U; |
| |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Error Callback */ |
| husart->ErrorCallback(husart); |
| #else |
| /* Call legacy weak Error Callback */ |
| HAL_USART_ErrorCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| |
| /** |
| * @brief DMA USART Tx communication abort callback, when initiated by user |
| * (To be called at end of DMA Tx Abort procedure following user abort request). |
| * @note When this callback is executed, User Abort complete call back is called only if no |
| * Abort still ongoing for Rx DMA Handle. |
| * @param hdma DMA handle. |
| * @retval None |
| */ |
| static void USART_DMATxAbortCallback(DMA_HandleTypeDef *hdma) |
| { |
| USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; |
| |
| husart->hdmatx->XferAbortCallback = NULL; |
| |
| /* Check if an Abort process is still ongoing */ |
| if (husart->hdmarx != NULL) |
| { |
| if (husart->hdmarx->XferAbortCallback != NULL) |
| { |
| return; |
| } |
| } |
| |
| /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */ |
| husart->TxXferCount = 0x00U; |
| husart->RxXferCount = 0x00U; |
| |
| /* Reset errorCode */ |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| |
| /* Restore husart->State to Ready */ |
| husart->State = HAL_USART_STATE_READY; |
| |
| /* Call user Abort complete callback */ |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Abort Complete Callback */ |
| husart->AbortCpltCallback(husart); |
| #else |
| /* Call legacy weak Abort Complete Callback */ |
| HAL_USART_AbortCpltCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| |
| /** |
| * @brief DMA USART Rx communication abort callback, when initiated by user |
| * (To be called at end of DMA Rx Abort procedure following user abort request). |
| * @note When this callback is executed, User Abort complete call back is called only if no |
| * Abort still ongoing for Tx DMA Handle. |
| * @param hdma DMA handle. |
| * @retval None |
| */ |
| static void USART_DMARxAbortCallback(DMA_HandleTypeDef *hdma) |
| { |
| USART_HandleTypeDef *husart = (USART_HandleTypeDef *)((DMA_HandleTypeDef *)hdma)->Parent; |
| |
| husart->hdmarx->XferAbortCallback = NULL; |
| |
| /* Check if an Abort process is still ongoing */ |
| if (husart->hdmatx != NULL) |
| { |
| if (husart->hdmatx->XferAbortCallback != NULL) |
| { |
| return; |
| } |
| } |
| |
| /* No Abort process still ongoing : All DMA channels are aborted, call user Abort Complete callback */ |
| husart->TxXferCount = 0x00U; |
| husart->RxXferCount = 0x00U; |
| |
| /* Reset errorCode */ |
| husart->ErrorCode = HAL_USART_ERROR_NONE; |
| |
| /* Restore husart->State to Ready */ |
| husart->State = HAL_USART_STATE_READY; |
| |
| /* Call user Abort complete callback */ |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Abort Complete Callback */ |
| husart->AbortCpltCallback(husart); |
| #else |
| /* Call legacy weak Abort Complete Callback */ |
| HAL_USART_AbortCpltCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| } |
| |
| /** |
| * @brief Simplex Send an amount of data in non-blocking mode. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval HAL status |
| * @note The USART errors are not managed to avoid the overrun error. |
| */ |
| static HAL_StatusTypeDef USART_Transmit_IT(USART_HandleTypeDef *husart) |
| { |
| uint16_t *tmp; |
| |
| if (husart->State == HAL_USART_STATE_BUSY_TX) |
| { |
| if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) |
| { |
| tmp = (uint16_t *) husart->pTxBuffPtr; |
| husart->Instance->DR = (uint16_t)(*tmp & (uint16_t)0x01FF); |
| husart->pTxBuffPtr += 2U; |
| } |
| else |
| { |
| husart->Instance->DR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF); |
| } |
| |
| if (--husart->TxXferCount == 0U) |
| { |
| /* Disable the USART Transmit data register empty Interrupt */ |
| CLEAR_BIT(husart->Instance->CR1, USART_CR1_TXEIE); |
| |
| /* Enable the USART Transmit Complete Interrupt */ |
| SET_BIT(husart->Instance->CR1, USART_CR1_TCIE); |
| } |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Wraps up transmission in non blocking mode. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval HAL status |
| */ |
| static HAL_StatusTypeDef USART_EndTransmit_IT(USART_HandleTypeDef *husart) |
| { |
| /* Disable the USART Transmit Complete Interrupt */ |
| CLEAR_BIT(husart->Instance->CR1, USART_CR1_TCIE); |
| |
| /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */ |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE); |
| |
| husart->State = HAL_USART_STATE_READY; |
| |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Tx Complete Callback */ |
| husart->TxCpltCallback(husart); |
| #else |
| /* Call legacy weak Tx Complete Callback */ |
| HAL_USART_TxCpltCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| |
| return HAL_OK; |
| } |
| |
| /** |
| * @brief Simplex Receive an amount of data in non-blocking mode. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval HAL status |
| */ |
| static HAL_StatusTypeDef USART_Receive_IT(USART_HandleTypeDef *husart) |
| { |
| uint8_t *pdata8bits; |
| uint16_t *pdata16bits; |
| |
| if (husart->State == HAL_USART_STATE_BUSY_RX) |
| { |
| if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) |
| { |
| pdata8bits = NULL; |
| pdata16bits = (uint16_t *) husart->pRxBuffPtr; |
| *pdata16bits = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF); |
| husart->pRxBuffPtr += 2U; |
| } |
| else |
| { |
| pdata8bits = (uint8_t *) husart->pRxBuffPtr; |
| pdata16bits = NULL; |
| |
| if ((husart->Init.WordLength == USART_WORDLENGTH_9B) || ((husart->Init.WordLength == USART_WORDLENGTH_8B) && (husart->Init.Parity == USART_PARITY_NONE))) |
| { |
| *pdata8bits = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF); |
| } |
| else |
| { |
| *pdata8bits = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F); |
| } |
| |
| husart->pRxBuffPtr += 1U; |
| } |
| |
| husart->RxXferCount--; |
| |
| if (husart->RxXferCount == 0U) |
| { |
| /* Disable the USART RXNE Interrupt */ |
| CLEAR_BIT(husart->Instance->CR1, USART_CR1_RXNEIE); |
| |
| /* Disable the USART Parity Error Interrupt */ |
| CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE); |
| |
| /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */ |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE); |
| |
| husart->State = HAL_USART_STATE_READY; |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Rx Complete Callback */ |
| husart->RxCpltCallback(husart); |
| #else |
| /* Call legacy weak Rx Complete Callback */ |
| HAL_USART_RxCpltCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| |
| return HAL_OK; |
| } |
| else |
| { |
| /* Send dummy byte in order to generate the clock for the slave to send the next data. |
| * Whatever the frame length (7, 8 or 9-bit long), the same dummy value |
| * can be written for all the cases. */ |
| husart->Instance->DR = (DUMMY_DATA & (uint16_t)0x0FF); |
| } |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Full-Duplex Send receive an amount of data in full-duplex mode (non-blocking). |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval HAL status |
| */ |
| static HAL_StatusTypeDef USART_TransmitReceive_IT(USART_HandleTypeDef *husart) |
| { |
| uint8_t *pdata8bits; |
| uint16_t *pdata16bits; |
| |
| if (husart->State == HAL_USART_STATE_BUSY_TX_RX) |
| { |
| if (husart->TxXferCount != 0x00U) |
| { |
| if (__HAL_USART_GET_FLAG(husart, USART_FLAG_TXE) != RESET) |
| { |
| if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) |
| { |
| pdata8bits = NULL; |
| pdata16bits = (uint16_t *) husart->pTxBuffPtr; |
| husart->Instance->DR = (uint16_t)(*pdata16bits & (uint16_t)0x01FF); |
| husart->pTxBuffPtr += 2U; |
| } |
| else |
| { |
| husart->Instance->DR = (uint8_t)(*husart->pTxBuffPtr++ & (uint8_t)0x00FF); |
| } |
| |
| husart->TxXferCount--; |
| |
| /* Check the latest data transmitted */ |
| if (husart->TxXferCount == 0U) |
| { |
| CLEAR_BIT(husart->Instance->CR1, USART_CR1_TXEIE); |
| } |
| } |
| } |
| |
| if (husart->RxXferCount != 0x00U) |
| { |
| if (__HAL_USART_GET_FLAG(husart, USART_FLAG_RXNE) != RESET) |
| { |
| if ((husart->Init.WordLength == USART_WORDLENGTH_9B) && (husart->Init.Parity == USART_PARITY_NONE)) |
| { |
| pdata8bits = NULL; |
| pdata16bits = (uint16_t *) husart->pRxBuffPtr; |
| *pdata16bits = (uint16_t)(husart->Instance->DR & (uint16_t)0x01FF); |
| husart->pRxBuffPtr += 2U; |
| } |
| else |
| { |
| pdata8bits = (uint8_t *) husart->pRxBuffPtr; |
| pdata16bits = NULL; |
| if ((husart->Init.WordLength == USART_WORDLENGTH_9B) || ((husart->Init.WordLength == USART_WORDLENGTH_8B) && (husart->Init.Parity == USART_PARITY_NONE))) |
| { |
| *pdata8bits = (uint8_t)(husart->Instance->DR & (uint8_t)0x00FF); |
| } |
| else |
| { |
| *pdata8bits = (uint8_t)(husart->Instance->DR & (uint8_t)0x007F); |
| } |
| husart->pRxBuffPtr += 1U; |
| } |
| |
| husart->RxXferCount--; |
| } |
| } |
| |
| /* Check the latest data received */ |
| if (husart->RxXferCount == 0U) |
| { |
| /* Disable the USART RXNE Interrupt */ |
| CLEAR_BIT(husart->Instance->CR1, USART_CR1_RXNEIE); |
| |
| /* Disable the USART Parity Error Interrupt */ |
| CLEAR_BIT(husart->Instance->CR1, USART_CR1_PEIE); |
| |
| /* Disable the USART Error Interrupt: (Frame error, noise error, overrun error) */ |
| CLEAR_BIT(husart->Instance->CR3, USART_CR3_EIE); |
| |
| husart->State = HAL_USART_STATE_READY; |
| |
| #if (USE_HAL_USART_REGISTER_CALLBACKS == 1) |
| /* Call registered Tx Rx Complete Callback */ |
| husart->TxRxCpltCallback(husart); |
| #else |
| /* Call legacy weak Tx Rx Complete Callback */ |
| HAL_USART_TxRxCpltCallback(husart); |
| #endif /* USE_HAL_USART_REGISTER_CALLBACKS */ |
| |
| return HAL_OK; |
| } |
| |
| return HAL_OK; |
| } |
| else |
| { |
| return HAL_BUSY; |
| } |
| } |
| |
| /** |
| * @brief Configures the USART peripheral. |
| * @param husart Pointer to a USART_HandleTypeDef structure that contains |
| * the configuration information for the specified USART module. |
| * @retval None |
| */ |
| static void USART_SetConfig(USART_HandleTypeDef *husart) |
| { |
| uint32_t tmpreg = 0x00U; |
| uint32_t pclk; |
| |
| /* Check the parameters */ |
| assert_param(IS_USART_INSTANCE(husart->Instance)); |
| assert_param(IS_USART_POLARITY(husart->Init.CLKPolarity)); |
| assert_param(IS_USART_PHASE(husart->Init.CLKPhase)); |
| assert_param(IS_USART_LASTBIT(husart->Init.CLKLastBit)); |
| assert_param(IS_USART_BAUDRATE(husart->Init.BaudRate)); |
| assert_param(IS_USART_WORD_LENGTH(husart->Init.WordLength)); |
| assert_param(IS_USART_STOPBITS(husart->Init.StopBits)); |
| assert_param(IS_USART_PARITY(husart->Init.Parity)); |
| assert_param(IS_USART_MODE(husart->Init.Mode)); |
| |
| /* The LBCL, CPOL and CPHA bits have to be selected when both the transmitter and the |
| receiver are disabled (TE=RE=0) to ensure that the clock pulses function correctly. */ |
| CLEAR_BIT(husart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE)); |
| |
| /*---------------------------- USART CR2 Configuration ---------------------*/ |
| tmpreg = husart->Instance->CR2; |
| /* Clear CLKEN, CPOL, CPHA and LBCL bits */ |
| tmpreg &= (uint32_t)~((uint32_t)(USART_CR2_CPHA | USART_CR2_CPOL | USART_CR2_CLKEN | USART_CR2_LBCL | USART_CR2_STOP)); |
| /* Configure the USART Clock, CPOL, CPHA and LastBit -----------------------*/ |
| /* Set CPOL bit according to husart->Init.CLKPolarity value */ |
| /* Set CPHA bit according to husart->Init.CLKPhase value */ |
| /* Set LBCL bit according to husart->Init.CLKLastBit value */ |
| /* Set Stop Bits: Set STOP[13:12] bits according to husart->Init.StopBits value */ |
| tmpreg |= (uint32_t)(USART_CLOCK_ENABLE | husart->Init.CLKPolarity | |
| husart->Init.CLKPhase | husart->Init.CLKLastBit | husart->Init.StopBits); |
| /* Write to USART CR2 */ |
| WRITE_REG(husart->Instance->CR2, (uint32_t)tmpreg); |
| |
| /*-------------------------- USART CR1 Configuration -----------------------*/ |
| tmpreg = husart->Instance->CR1; |
| |
| /* Clear M, PCE, PS, TE, RE and OVER8 bits */ |
| tmpreg &= (uint32_t)~((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | USART_CR1_TE | \ |
| USART_CR1_RE | USART_CR1_OVER8)); |
| |
| /* Configure the USART Word Length, Parity and mode: |
| Set the M bits according to husart->Init.WordLength value |
| Set PCE and PS bits according to husart->Init.Parity value |
| Set TE and RE bits according to husart->Init.Mode value |
| Force OVER8 bit to 1 in order to reach the max USART frequencies */ |
| tmpreg |= (uint32_t)husart->Init.WordLength | husart->Init.Parity | husart->Init.Mode | USART_CR1_OVER8; |
| |
| /* Write to USART CR1 */ |
| WRITE_REG(husart->Instance->CR1, (uint32_t)tmpreg); |
| |
| /*-------------------------- USART CR3 Configuration -----------------------*/ |
| /* Clear CTSE and RTSE bits */ |
| CLEAR_BIT(husart->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE)); |
| |
| /*-------------------------- USART BRR Configuration -----------------------*/ |
| if((husart->Instance == USART1) || (husart->Instance == USART6)) |
| { |
| pclk = HAL_RCC_GetPCLK2Freq(); |
| husart->Instance->BRR = USART_BRR(pclk, husart->Init.BaudRate); |
| } |
| else |
| { |
| pclk = HAL_RCC_GetPCLK1Freq(); |
| husart->Instance->BRR = USART_BRR(pclk, husart->Init.BaudRate); |
| } |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* HAL_USART_MODULE_ENABLED */ |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |